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#1
01-12-2021, 01:39 PM
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Hesitation / rpm drop in 1st and 2nd gear
I just replaced the water pump on my 2007 x5 3.0 as it had failed. I replaced the thermostat while I was there too. Before the water pump had failed the car was running perfectly fine. After I changed the pump I notice slight hesitation and quick rpm drop Randomly in 1st or 2nd gear. It happens sometimes when I’m driving around 65mph also where it feels like the car hesitates a bit maybe a slight drop in rpm and then continues to drive. I checked the codes and see nothing and everything else seems okay
Any thoughts on what this could be ? Do you think it’s related to the water pump ? Sent from my iPhone using Tapatalk 
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#2
01-12-2021, 04:05 PM
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Start by checking for any vacuum hose that was disturbed in the process or any part of the intake that was removed.
__________________
2003 4.4i black ext./black int./black headliner (kid's runabout) 2014 535d X-drive, M package, silver/black interior Sold but not forgotten: 2009 E70 35d, black ext./black int./black headliner (sold 2021) 2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly... Other hardware: 2015 Cayenne S (wife's new DD and definitely wroooommmmm) 2016 Tundra 1794 edition crew cab, luxo hauler 2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.
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